Dennis Radage: "The History of English Clocks"
Dennis Radage: "The History of English Watches"
Dennis Radage: "The Brief History of Chronometers"
Dennis Radage: "The Story of the English Bracket Clocks"
Dennis Radage: "The History of the English Longcase Clocks"
Jim Hernick: "Webb C. Ball Railroad Standard Watches and Clocks"